Car-wheel.



E. A. JOHNSON.

GAR WHEEL.

APPLIOATION FILED SEPT.20, 1909.

Patented May 24, 1910.

EMIL A. JOHNSON, OF OLIVIA, MINNESOTA.

CAB-WHEEL.

Specification of Letters Patent.

Patented May 24:, 1910.

Application filed September 20, 1909. Serial No. 518,571.

To all whom it may concern:

Be it known that I, EMIL A. JOHNSON, a citizen of the United States,residing at Olivia, in the county of Renville, State of Minnesota, haveinvented certain new and useful Improvements in Gar-VVheels; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to improvements in car wheels, and has for one ofits objects to provide a simply constructed attachment whereby thewheels are maintained in locked relations to the track at all points inthe revolutions of the wheel.

With this and other objects in view, the invention consists in certainnovel features of construction as hereafter shown and described and thenspecifically pointed out in the claims, and in the drawings illustrativeof the preferred embodiment of the invention, Figure 1 represents a carwheel viewed from the inner face and a portion of a track, with theimprovement applied to the wheel. Fig. 2 is a section on the line 2-2 ofFig. 1. Fig. 3 is a sectional detail, illustrating a modification in theconstruction.

The improved device may be applied to car wheels of variousconstruction, and it is not desired therefore to limit the invention touse upon any specific form or size of wheel, but for the purpose ofillustration the improved device is shown applied to a conventional carwheel which comprises a hub 10', rim 11 having a flange 12 and aconnecting web 13. The car wheel bears by its tread upon the rail,represented at 14.

The improved attachment comprises a member formed with an annular web 15which bears against the outer end of the rim 11 and is secured in anysuitable manner to the wheel, preferably by a plurality of bolts 16extending through the web 15 of the wheel 18, as shown. Formed upon theannular web 15 at its outer edge is an annular channel 17 semi-circulartransversely and forming a seat for a bearing ball 18. The web 15 withits channel 17 extends be yond the rim 11 of the wheel at all sides, sothat when the wheel is located upon the rail the channel extends belowthe tread of the rail, as shown, and the channel 17 is so located thatwhen the wheel is in position upon the rail and the ball 18 within thechannel, the ball will constantly project beneath the head or tread ofthe rail, as shown in Fig. 2. By this means the ball is prevented fromdropping from the channel by its position relative to the head of therail, as will be obvious. The ball also thus projects beneath the railand forms an efiectual lock between the wheel and the rail, and preventsthe wheel from being separated from the rail. By this simple arrangementas the wheel rotates upon the rail the ball will retain its position atthe lower side of the wheel and of the channel, and eflectually lock thewheel to the rail, while at the same time not preventing the rotation ofthe wheel upon the rail.

In Fig. 3 is shown a modification in the construction, consisting informing the annular member with its annular channel integral with thewheel, which structure may be employed if preferred.

While the improved devices is designed more particularly for employmentwith car wheels having the flange 12, it will be understood that theinvention is not necessarily limited thereto, as it may be employedunder certain conditions upon wheels not having the flange.

What is claimed is 1. A car wheel having a flange at one side and withan annular channel spaced from said flange, and a bearing ball locatedwithin said channel and adapted to project beneath the head portion ofthe rail at the side opposite to the flange.

2. A car wheel having a flange at one side and with an annularprojection at the side opposite to said flange, said projection havingan inwardly opening annular channel, and a bearing ball within saidchannel and adapted to project beneath the head portion of a rail at theside opposite the flange of the wheel.

3. An attachment for car wheels comprising an annular member having anannular channel in one face, means for attaching said annular member toa car wheel with the channel located beyond the rim of the wheel, and abearing ball located within said channel and adapted to project beneaththe head portion of a rail at the side opposite the flange of the wheel.

1. A wheel having an annular channel spaced from its tread, and abearing ball located within said channel and adapted to project beneaththe head portion of a railway rail.

5. A Wheel havin an annular projection at one side eXten ing beyond thetread thereof, said projection having an inwardly opening annularchannel, and a bearing ball Within said channel and adapted to projectbeneath the head portion of a railway rail.

6. The combination with a Wheel including an annular rim having a treadupon its outer face, of an annular member having an annular channel inone face near the outer edge and an annular shoulder near the inneredge, said shoulder bearing against the inner face of the rim portion ofthe Wheel, means for attaching said annular member to said Wheel, and abearing ball located Within said annular channel and adapted to projecltbeneath the head portion of a railway rai In testimony whereof, I affixmy signature, in presence of tWo Witnesses.

v EMIL A. JOHNSON. lVitnesses H. S'. BORDEWICH, G. Gr. PLOYHART.

